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  <title>FilterIterator 类</title>
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 <h1 class="title">FilterIterator 类</h1>
 

 <div class="partintro"><p class="verinfo">(PHP 5 &gt;= 5.1.0, PHP 7, PHP 8)</p>


  <div class="section" id="filteriterator.intro">
   <h2 class="title">简介</h2>
   <p class="para">
    这个抽象类的遍历并过滤出不想要的值。这个类应该被实现了迭代过滤器的类继承
    <span class="methodname"><a href="filteriterator.accept.html" class="methodname">FilterIterator::accept()</a></span> 方法必须被子类实现。
   </p>
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  <div class="section" id="filteriterator.synopsis">
   <h2 class="title">类摘要</h2>


   <div class="classsynopsis">
    <div class="ooclass">
     
    </div>

    <div class="classsynopsisinfo">
     <span class="ooclass">
      <span class="modifier">abstract</span>
      <span class="modifier">class</span> <strong class="classname">FilterIterator</strong>
     </span>

     <span class="ooclass">
      <span class="modifier">extends</span>
       <a href="class.iteratoriterator.html" class="classname">IteratorIterator</a>
     </span>
     {</div>

    <div class="classsynopsisinfo classsynopsisinfo_comment">/* 方法 */</div>
    <div class="constructorsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><a href="filteriterator.construct.html" class="methodname">__construct</a></span>(<span class="methodparam"><span class="type"><a href="class.iterator.html" class="type Iterator">Iterator</a></span> <code class="parameter">$iterator</code></span>)</div>

    <div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="filteriterator.accept.html" class="methodname">accept</a></span>(): <span class="type">bool</span></div>
<div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="filteriterator.current.html" class="methodname">current</a></span>(): <span class="type"><a href="language.types.declarations.html#language.types.declarations.mixed" class="type mixed">mixed</a></span></div>
<div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="filteriterator.getinneriterator.html" class="methodname">getInnerIterator</a></span>(): <span class="type"><a href="class.iterator.html" class="type Iterator">Iterator</a></span></div>
<div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="filteriterator.key.html" class="methodname">key</a></span>(): <span class="type"><a href="language.types.declarations.html#language.types.declarations.mixed" class="type mixed">mixed</a></span></div>
<div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="filteriterator.next.html" class="methodname">next</a></span>(): <span class="type"><span class="type void">void</span></span></div>
<div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="filteriterator.rewind.html" class="methodname">rewind</a></span>(): <span class="type"><span class="type void">void</span></span></div>
<div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="filteriterator.valid.html" class="methodname">valid</a></span>(): <span class="type">bool</span></div>


    <div class="classsynopsisinfo classsynopsisinfo_comment">/* 继承的方法 */</div>
    <div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="iteratoriterator.current.html" class="methodname">IteratorIterator::current</a></span>(): <span class="type"><a href="language.types.declarations.html#language.types.declarations.mixed" class="type mixed">mixed</a></span></div>
<div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="iteratoriterator.getinneriterator.html" class="methodname">IteratorIterator::getInnerIterator</a></span>(): <span class="type"><span class="type">?</span><span class="type"><a href="class.iterator.html" class="type Iterator">Iterator</a></span></span></div>
<div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="iteratoriterator.key.html" class="methodname">IteratorIterator::key</a></span>(): <span class="type"><a href="language.types.declarations.html#language.types.declarations.mixed" class="type mixed">mixed</a></span></div>
<div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="iteratoriterator.next.html" class="methodname">IteratorIterator::next</a></span>(): <span class="type"><span class="type void">void</span></span></div>
<div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="iteratoriterator.rewind.html" class="methodname">IteratorIterator::rewind</a></span>(): <span class="type"><span class="type void">void</span></span></div>
<div class="methodsynopsis dc-description"><span class="modifier">public</span> <span class="methodname"><a href="iteratoriterator.valid.html" class="methodname">IteratorIterator::valid</a></span>(): <span class="type">bool</span></div>

   }</div>

  </div>



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<h2>目录</h2><ul class="chunklist chunklist_reference"><li><a href="filteriterator.accept.html">FilterIterator::accept</a> — Check whether the current element of the iterator is acceptable</li><li><a href="filteriterator.construct.html">FilterIterator::__construct</a> — Construct a filterIterator</li><li><a href="filteriterator.current.html">FilterIterator::current</a> — Get the current element value</li><li><a href="filteriterator.getinneriterator.html">FilterIterator::getInnerIterator</a> — Get the inner iterator</li><li><a href="filteriterator.key.html">FilterIterator::key</a> — Get the current key</li><li><a href="filteriterator.next.html">FilterIterator::next</a> — Move the iterator forward</li><li><a href="filteriterator.rewind.html">FilterIterator::rewind</a> — Rewind the iterator</li><li><a href="filteriterator.valid.html">FilterIterator::valid</a> — Check whether the current element is valid</li></ul>
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